I personally never do and have never knowingly done the "sub" tactic or whatever.
But to be fair, takami's tactic just sounds like good @ss'd gamemanship to me.
The SP switching thing I never really notice. I roll with my guy. Beat my guy, simple as that. IF I notice a guy starting a 200K scrub then I'll switch if I can. Any other time I switch is if I simply like started the wrong dude or whatever.
I used to use the sac-bunt ad nausem. Now, I only use it with the pitcher, and if you want to try it and possibly waste an out when the sim has really watered down sac-bunting, be my guest. Again, I chalk that up to gameplay.
Really, I don't have any problem how anybody plays. Beat me if you can, bring it. However, I don't like guys on chronically slow computers who are playing on weak-***'d laptops or have multiple windows open. That is annoying. But again, I still try and play.